The Deck Park Tunnel isn’t technically a tunnel - it’s actually made up of 19 bridges that are lined up side by side, creating a tunnel effect for motorists. But there are actual, honest-to-goodness tunnels that were dug during the project.
In 1957, Arizona’s first freeway interchange was finished, connecting Black Canyon Freeway and US 60/Grand Avenue, northwest of downtown Phoenix near Thomas Road.
Highway construction isn’t just big machinery, heavy-duty vehicles and materials by the ton. There’s a lot of work that happens off project sites and inside a lab.